期刊
JOURNAL OF PORPHYRINS AND PHTHALOCYANINES
卷 23, 期 6, 页码 671-678出版社
WORLD SCI PUBL CO INC
DOI: 10.1142/S108842461950038X
关键词
dipyrromethanes; porphyrin; manganese; epoxidation
资金
- Faculty of Chemistry of Sharif University of Technology
Condensation of pyrrole with various aldehydes in the presence of BF3 center dot etherate as an acid catalyst in water provides good yield of some dipyrromethanes. Prolongation of the reaction time with aldehydes substituted by electron-donating (mesityl) or electron-withdrawing (2,6-dichlorophenyl) groups on the ortho positions of the phenyl did not lead to decomposition or scrambling. Manganese trans disubstituted porphyrin complexes which derive from various dipyrromethanes and manganese tetraaryl porphyrin complexes including various substituents with different steric and electronic properties show good catalytic activity in epoxidation of alkenes by NaIO4 in the presence of imidazole (ImH). The study of steric and electronic effects of the catalysts on the epoxidation of olefins shows that Mn-porphyrin complexes with more bulky and electron-releasing groups on meso phenyls could increase the epoxidation yield of most alkenes.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据